OS: OS X 10.7.5
i got a Macbook Pro 8,1 (13,3" Early 2011) which worked flawlessly - until yesterday.
Yesterday I decided to install the MacBook Pro SMC Update 1.6 (http://support.apple.com/kb/DL1626) - a bit unusual for me, since i normally wait a few weeks until others tried such an update. I did nothing in parallel on my mac, just the update. After the installation process i rebooted my system to finish the update process, the scm update installation run, everything seemed to went fine.
But shortly after the login process, my System froze and i had to hard shutdown my macbook. The first 3 or 4 attempts to only switch on my computer i got only a flashing indicator led, as usual, but not display output, no start sound, nothing. I waited a few minutes, tried again, the system started to boot until the login window, but i had no time to input my credentials - the system froze again.
Since a got a bit computer experience, it's my day job, i first thought of a bad RAM. So i replaced it with two totally new ones (Corsair Mac Memory) and some older original Apple RAM, but nothing changed. I did the same with the harddisk, even i don't think it's related to a harddrive failure because of the symptoms, while trying to install a fresh OS - the system froze again.
After that i tried everything Apple proposed: SMC reset multiple times, NVRAM/PRAM reset multiple times, but nothing helped in my case.
So the current state is as follows:
- The system freezes everytime, sometimes earlier, sometimes later. But normally within 10 seconds. (I observed, the longer the computer stays off, the later the freeze appears). After a hard shutdown, i've to wait a few minutes to get the computer to display anything.
- I read the log files after installing the harddrive to another computer (it works fine there), but there seems nothing special (i could post it, if somebody need it). The system just stops responding.
I think, it MUST be related to the MacBook Pro SMC Update 1.6, because i had no problems at all before this firmware update, problems started after it.
Is anybody out there, who has another suggestion for me, or has the same symptoms?